31142121201 has 6 divisors (see below), whose sum is σ = 44983063970. Its totient is φ = 20761414128.

The previous prime is 31142121191. The next prime is 31142121203. The reversal of 31142121201 is 10212124113.

31142121201 is a `hidden beast` number, since 31 + 1 + 421 + 212 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18231480576 + 12910640625 = 135024^2 + 113625^2 .

It is not a de Polignac number, because 31142121201 - 2¹⁵ = 31142088433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31142121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1730117836 + ... + 1730117853.

Almost surely, 2^31142121201 is an apocalyptic number.

It is an amenable number.

31142121201 is a deficient number, since it is larger than the sum of its proper divisors (13840942769).

31142121201 is a wasteful number, since it uses less digits than its factorization.

31142121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460235695 (or 3460235692 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 31142121201 its reverse (10212124113), we get a palindrome (41354245314).

The spelling of 31142121201 in words is "thirty-one billion, one hundred forty-two million, one hundred twenty-one thousand, two hundred one".